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Mariah The Scientist and Kali Uchis Join Forces on “Is It a Crime”

In a highly anticipated first-time collaboration, Mariah The Scientist and Kali Uchis have released their sultry new single “Is It a Crime”, marking the second official track from Mariah’s upcoming album Hearts Sold Separately, due out August 22.

The track arrives just weeks after Mariah’s stunning comeback single “Burning Blue”, and once again reinforces her ability to blend vulnerability with sensuality in a way that feels both classic and contemporary.

A Long-Awaited R&B Duo Finally Happens

Clocking in at just over three minutes, “Is It a Crime” opens with Mariah’s signature silky vocals before handing the mic to Kali Uchis, who adds a lush, bilingual verse that blends seamlessly into the dreamy production. The pairing — long imagined by fans of both artists — feels as natural as it is overdue.

Their effortless chemistry creates a hypnotic atmosphere, exploring themes of romantic ambiguity and emotional intensity. The production leans into soft synths, lo-fi textures, and slow-burning percussion — a moody backdrop that complements both artists' tones.

A Visual Likely on the Way

While a music video has yet to be released, Mariah has teased visuals tied to the single on Instagram, hinting at an official video rollout soon. If her recent creative direction is any indication, fans can expect a stylish, emotionally layered short film to accompany the track.

Album Details So Far

Hearts Sold Separately will feature 10 tracks, with “Burning Blue” and “Is It a Crime” appearing as tracks 4 and 5, respectively. Though the full tracklist hasn’t been confirmed, these first two singles suggest a project steeped in intimate storytelling, ambient production, and late-night energy.

With two genre-shaping voices like Mariah The Scientist and Kali Uchis joining forces, “Is It a Crime” is more than just a duet — it’s a defining moment in modern R&B’s evolving landscape.

Stream “Is It a Crime” now on all major platforms and mark your calendar for Hearts Sold Separately, dropping August 22.